Suction cleaner nozzle



" M y 1932- A. o. ENGBERG ET AL 0, 5

SUCTION CLEANER NOZZLE I f Filed April 26, ,1927' 2 Sheets-Sheet 1 May31, 1932. A. o. ENGBERG ET AL SUCTION CLEANER NdzzLE Filed April 26,1927 2 Sheets-Sheet 2 Patented May 31, 1932 KUNITED STATES PATENT OFFICEAXE]; OLOI ENG-BERG, OF STOCKHOLII, SWEDEN, AND ERIK IBILDE, OI BERLIN-rmurnnnor. GERMANY, assrenons,

BY MESNE ASSIGNMENTS, TO ELECTROLUX CORPORATION, A CORPORATION 01?DELAWARE- SUCTION CLEANER NOZZLE Application med April 26, 1927, SerialNo. 188,740, and in German), September 8,

Our invention relates to vacuum cleaner nozzle apparatus and moreparticularly to nozzle a paratus of the type having a plurality ofnozzle openings for diflerent kinds or degrees of suction. v

The object of the invention is to provide nozzle apparatus having mainand auxiliary nozzle openings constructed so that, by a simple relativemovement of parts, selec tivity of suction with respect to nozzleopenings may be readil obtained.

The nature of t e invention will become apparent from a consideration ofthe following description taken in conjunction wlt-h the accompanyingdrawings forming a part of this specification, of which:

Fig. 1 shows a vacuum cleaner comprising nozzle apparatus in accordancewith the invention;

Fig. 2 shows a detail of the apparatus of 'Fi 1' Fi 3 shows theapparatus of Fig. 1 with a difirent relative position of parts;

Fig. 3a shows a detail of an alternative locking means;

Fig. 4 is an end vie Fig. 1;

Fig. 5 shows one position of parts of another embodiment of theinvention;

Fig. 6 shows a difi'erent relative position of parts'of the structure ofF i Fig. 7 is a perspective view oi the end of a tubular member formingpart of the apparatus of certain embodiments;

Fig. 8 shows still another embodiment of the invention with the parts inone position; and

Fig. 9 shows the structure of Fig. 8 with the parts in another position.

Referring to igs. 1, 2, 3, and 4, the apparatus comprises a nozzle body10 which may be in the form of a cast body, made, for instance, of castaluminum. The nozzle'body has an upper cylindrical portion 11 and alower flared portion 12. At the bottom of thafiared portion 12 is themain nozzle opening 13. This nozzle opening is a relatively narrow,transversely elongated opening, the width thereof being shown in Figs. 1and 3 of the apparatus of and the transverse extent being shown in Fig.4. The nozzle bod has an intemal bore 14. This bore exten s across thedown? wardly directed channel 15 leadingto openmg 13 and through the endwall 16 of the nozzle body. This provides an opening 17 in this endwall, which we will term the auxiliary opening of the nozzle body.

The inner part of the cylindrical portion 11 is of greater diameter thanthe bore 14. A cap member or nut 18 is screwed onto the upper end of thecylindrical portion 11 of the nozzle body. central opening 19. i

A tubular member 20 is positioned in the nozzle body. Tubular member 20is of an external diameter substantially equal to the diameter of bore14. This tubular member is positioned in the passage of the nozzle body10 formed by the interior of the cylindrical portion 11, the bore 14 andthe opening 19 in member 18. An annular space 21 is formed between theouter surface of tubular member 20 and the inner surface of thecylindrical portion 11.

Secured to tubular member 20 is a guide ring 22. Ring 22 carries aprojecting stop or guide pin 23, which may be in the form of a screw.The tubular member 20 is longitudinally slidable in the cylindricalportion of the nozzle body. Ring 22 moves with the tubular member 20 andin the annular space 211. The stop 23 moves in a longitudinal s 0tportion 11. Adjacent'the ends of slot 24 are cross-slots 25 at rightangles thereto adapted to receive stop 23.

A spring 26 is fastened at one end 27 to ring 22 and at the other end 28to the nozzle body. Spring 26 is under torsion so that it will move stop23 into cross-slots 25 when tubular member 20 is in such position as topermit this. It also exerts a force longitudinally of the tubularmember, urging it toward the position shown in Fig. 1. A packing ring 29is inserted between cap member 18 and. the cylindrical portion of thenozzle body the nozzle apparatus at this point.

Tubular member 20 has one of two positions in the nozzle body. Fig. 1shows what This cap member has a 24 cut in the inside surface ofcylindrical to prevent leakage of air into we term a retracted position.Fig. 3 shows what .we term an advanced position. In the retractedposition, shown in Fi 1, a cover or flap lid 30 covers opening 1Suitable means is provided to urge cover 30 into closed osition overopening 17 as by a spring hinge 31. The parts are finished so that thereis a tight fit between cover 30 and the portion of the nozzle bodyadjacent opening 17 when the cover is closed.

In the advanced position, shown in Fig. 3, the end of tubular member 20projects through opening 17 and holds cover 30 open. In this positionthe side of tubular member 20 at 32 closes the flared passageway 15. Inthis position the end opening 33 of the tubular member which is formedat an angle to the axis thereof, as shown, constitutes the auxiliarynozzle opening of the nozzle apparatus as a whole.

Tubular member 20 is connected to a flexible hose member 34, in turnconnected to the suction inlet of a vacuum cleaner housing 35 enclosingthe usual suction-producing mechanism.

When the main nozzle opening is to be used for suction, the tubularmember 20 is in the retracted position shown in Fig. 1. Cover 30 thencovers opening 17 so that air can be sucked in only through the mainnozzle opening 13. In this position of the parts, stop 23 is in theupper cross-slot 25 and isurge thereinto by the spring apparatus isbeing used in this position for cleaning a carpet. Suppose that there isa thread, or, for example, a relatively heavy object, on the carpet,which is not removed by the suction through opening 13., To obtaingreater suction, the parts are shifted to the advanced position shown inFig. 3 so that the auxiliarynozzle opening 33 with its greater suctioneffect may be used for picking up the thread or object. To change theposition, the parts are first-twisted relative to each other so thatstop 23 leaves crossslot 25. The parts are then moved longitudinallyrelative to each other against thetension of spring 26 and stop 23moves" in groove 24 until reached, when the spring 26 urges the -stopintothis cross-slot. The parts 'are' then' looked in the advancedposition shown in Fig. 3.

It will be seen that the main nozzle opening is cut off by the tubularmember when the auxiliary nozzle opening is used. When the auxiliarynozzle opening is not needed any more,.the parts are again twisted toremove stop 23 from the lower cross-slot 25 and the parts are thenpermitted to move longitudinally until stop 23 engages the uppercross-slot 25, the parts then being locked inthe position shown in-Fig.1.

Fig. 3a shows an alternative means for locking member 20 in givenposition. I This 26. Suppose that the the lower cross-slot 25 *is meansincludes a lock-shot 36, spring pressed by a spring 37 and cooperatingwith a recess 38 in tubular member 20.

In Figs. 5 to 9, the same reference characters are used as those forcorresponding parts in Figs. 1 to 4.

In the embodiment shown in Figs. 5, 6, and 7, the auxiliary nozzleopening is formed by the end opening of tubular member 20 in cooperationwith the cover 30. The end opening of tubular member 20 is formed, asshown in Fig. 7 by cutting the tubular member transversely at 40 andobliquely at 41. The inside surface of the cover 30 is flat andcooperates with the surface 41 in advanced position to restrict the sizeof the auxiliary nozzle opening to the part limited by the surface 40and the part of the cover adjacent surface 40. In other words, in thisembodiment, cover 30 cuts oil the end opening of tubular member 20 sofar as corresponds to surface 41. In the apparatus illustrated it willbe seen that this reduces the auxiliary opening 33 to approximatelyone-half of the internal transverse area of tubular member 20. In thisembodiment also, the side surface of tubular member 20 at 32 cuts offthe main nozzle opening 13 in advanced position. It will be seen that bythis means the auxiliary nozzle opening can be reduced so that a greatsuction velocity is obtained. Otherwise than (1 this difference, theembodiment of these Figs.

5 and 6 is similar to that of the previously described figures.

The embodiment shown in Fig. 8also differs merely in the formation ofthe auxiliary nozzle opening, which in this embodiment is designated breference character 42. Open- 7 ing 42 is a xed opening in the nozzlebody 10 immediately in front of the main nozzle opening 13. The frontwall 43 of the nozzle body is integral with the nozzle body proper, andbetween this wall and channel 15 is a web 44 in which is an .opening 45.The tubu- I lar member 20 is formed as shown in Fig. 7. In the advancedposition shown in Fig. 8, the. surface 41 of the tubular member 20 abutsagainst the wall 43. The surface 40 .engages in the opening 45. .Passageis provided for auxiliary suction through openin 42 and through thatpart of the end op ening of tubular member 20 which is bounded by thesurface 40. Again in this embodiment the side wall of tubular member 20,at 32, cuts 0E suction through the main nozzle opening when the tubularmemher is in advanced position as shown in Fig.

8 and auxiliary suction is being used. lVhen tmubular member 20, in thisembodiment,

is pulled back to retracted position, the whole end opening of tubularmember 20 is made available for suction and the suction in this case isboth through the main nozzle opening 13 and the auxiliary nozzle opening42. For picking up a thread or the like from a car et the arts are movedto the position ment for determinin the relative position through themain nozzle of parts, it will be understood that theseflmay be usedalternatively. 3 It will be seen that in each of the embodiments, theside of the tubular member 26 and the inside of the nozzle body areformedto provide a valve for cutting off suction opening when thetubular member is in-advanced position.

It will be understood that variationsin structure may be made within thespirit and scope of the invention as defined in the appended claims.

e claim:

1. In a vacuum cleaner, a nozzle body having a main nozzle opening andan auxiliary nozzle opening therein, and a tubular member longitudinallymovable in said nozzle body to communicate one or both of said nozzleopenings with the suction of the vacuum cleaner.

2. In a vacuum cleaner, a nozzle body having a main nozzle opening andan auxiliary nozzle opening therein, a tubular member slidable insaidnozzle body and communicating with the suction of the vacuum: cleaner,said tubular member having an opening therein to communicate said memberwith said nozzle openings, and means; positioning said tubular member insaid nozzle body to communicate with one or both of said nozzleopenings. R y

3. In a vacuum cleaner, a nozzle body having a. main nozzle opening andan auxiliary therein, .a' tubular member nozzle openin slidable 1n sa1nozzle body and communicating with the suction of the vacuum cleaner,.said tubular member having an. opening for tubular member being formedto permit suc- 1 communication with said nozzle openings,

and means positioning said tubular member in said nozzle body tocommunicate with one;

or both of said nozzle openings, said positionin means including alongitudinal slot in said pin in said tubular member.

4. In a vacuum cleaner, a nozzle body having a; main nozzle opening andan auxiliary nozzle opening thereln, a tubular member slidable in saldnozzle body and communicat-ing wlth the suction of the vacuum cleaner,for communication with said nozzle open- 'ings, and -means positioningsaid-tubular member in said nozzle "body tocommunicate wlth one or bothof said nozzle openings,

said positioning means including a longitudinal slot in said nozzlebody, cross-slots at the ends of said longitudinal slot and acooperating guide pin in said tubular member. I

ig. 8, which provides a verystrong suction through the auxiliary sionalforce said stop member into said cross-slots for locking the tubularmember in its limiting nozzle body and a cooperating guide said tubularmember having an opening 5. In a vacuum cleaner, a nozzle body having amain nozzle opening and an auxiliary nozzle 0 ning therein, a tubularmember slidable in saidnozzle body and communieating with the suction ofthe vacuum cleaner, said tubular member having an opening forcommunication with said nozzle openin'gs, and means positioning saidtubularv :member in said nozzle body to communicate said nozzleopenings, said positioning means including alongituwith one or both ofdinal slot in said nozzle body, cross-slots at the ends of saidlongitudinal slot, a cooperating stop member in said tubular member, andmeans normally urging said tubular member to one end of saidlongitudinal slot,

said last mentioned means exerting a toron said tubular member .to movepositions.

6. In a vacuum cleaner, a nozzle body having a main nozzle opening andan auxiliary nozzle opening therein, a tubular member slidable in saidnozzle body and communicating with the suction of the vacuum cleaner andhaving an opening thereinvfor communicating with the nozzle openings,and spring pressed locking means positioning said tubular member in saidnozzle body to communicate with one or both nozzle openin s-as-desired.

Ina vacuum cleaner,a nozzle body having a main opening and an auxiliaryopening therein and having acylindrical portion,

a tubular member longitudinally slidable in said cylindrical portion,and means for posit oning said tubular member in said .cylindricalportion in either an advanced position or a retracted position, the sideof said tubular member and the inside of said nozzle body comprising avalve for cutting off suction through said main opening, and said tionthrough said auxiliary opening in advanced position and to permitsuction through said main opening in retracted posipermit suction andthe side thereoftogether with the inside of said. nozzle bodycomprisinga valve for cutting oif suction through the other openinginone of said positions, and said tubular member permitting suctionthrough said other opening in the other of said positions.

9. In a vacuum cleaner, a nozzle body having a main opening and anauxiliary opening therein and having a cylindrical portion, a tubularmember longitudinally slidable in said cylindrical portion, andspring-pressed means for positioning said tubular member in saidcylindrical portion in either an advanced position or a retractedposition, the side of said tubular member and the inside of said nozzlebody comprising a valve for cutting off suction through said mainopening, and said tubular member being formed to permit suction throughsaid auxiliary open-' of together with the inside of said nozzle bodycomprising a valve for cutting off suction through the other opening inone of said positions, and said tubular member permitting suctionthrough said other opening in the other of said positions.

11. In a vacuum cleaner, a nozzle body having a plurality of openingstherein and having a cylindrical portion, a tubular member slidable insaid cylindrical portion, and means for positioning said tubular memberin said cylindrical portion in either of two positions, said tubularmember cooperating with one of said openings to permit suction and theside thereof together with the inside of' said nozzle body comprising avalve for cutting ofi suction through the other opening in one of saidpositions, and said tubular member permitting suction through said otheropening in the other of said positions, said positioning meanscomprising a ring'secured to said tubular member, a stop secured to saidring and projecting therefrom, said cylindrical portion being internallyslotted with a longitudinal slot and cross-slots, saidstop being.adapted to 'move in said slots, and a spring between said tubularmember and said nozzle body, having one end secured in said ring and theother end secured in said nozzle body, said spring being under torsionto urge said stop into either of said cross-slots and acting to urgesaid tubular member longitu dinally in said cylindrical portion to oneof said two positions.

12. In a mouth piece for a vacuum cleaner,

a nozzle, a nozzle member movable relatively to sa1d nozzle forcontrolhng communicatlon of said nozzle with the suction means of saidcleaner, a longitudinal guide slot in said nozble having cross slots atthe ends thereof, said nozzle member having a stopslidin in said slots,and means normally urging sa1d nozzle member to one end of saidlongitudinal slot, said means also exerting a tOISlOIlflIfOI'Oe on saidnozzle member to move said stop into said cross slots for locking thenozzle member in either of its limiting positions.

13. Suction cleaner nozzle apparatus comprising a nozzle member formedwith a first passageway therethrough, a projection on said member havinga second passageway therethrough and forming a main suction nozzle, saidsecond passageway communicating with said first passageway, said memberbeing formed with an auxiliary nozzle opening in line with said firstpassageway, means for closing said auxiliary nozzle opening, a tubularmember slidably mounted in said first passageway and having an open end,means for'positioning said tubular member so that the open end thereofextends through said auxiliary nozzle opening, and means for positioningsaid tubular member so that said open end is within said nozzle member,said second passageway communicating with said first passageway at apoint between said auxiliary nozzle opening and the open end of saidtubular member when the latter is in the last mentioned position.

14. Suction cleaner nozzle apparatus comprising a nozzle member formedwith a first passageway therethrough, a rojection on said member havinga second passageway therethrough and forming a main suction nozzle, saidsecond passageway communicating with said first passageway, said memberbeing formed with an auxiliary nozzleopening in line with said .firstpassageway, a hinged spring pressed member for normally closing saidauxiliary nozzle opening, a tubular member islidably mounted insaidfirst passageway and having an open end, means for positioning saidtubular member so that the open end thereof extends through saidauxiliary nozzle opening, and means for positioning said tubular memberso that said open end is within said nozzle member, said sec ondpassageway communicating with said first passageway at a point betweensaid auxiliary nozzle opening and the open end of said .tubular memberwhen the latter is in the last mentioned position.

In testimony whereof we hereunto aifix our AXEL- OL OF ENGBERG. ERIKBILDE.

' signatures.

